Yes, I checked that. But I am running my script in Browser stack. So I don't need to start selenium server explicitly. So, in that case, I don't know how should I use the Firefox driver to solve my problem.

The main issue with latest FF version along with latest Selenium is - It doesn't allow me to use moveMouseHover function. The same thing works fine for me if I downgrade FF version to 47 and seleinum to 2.53.1